CNC Machinist Calculator UltraG51 Ramp slope control
Fadal G-code · Mill
Changes how hard the axes ramp up and down. R0 sets the ramp speed from .5 to 2. Positive R0 for Z, negative for XY.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
G51 R0
Addresses
| Address | What it does |
|---|---|
R0 | Ramp speed .5 to 2. Plus for Z, minus for XY |
How it works
Modal until G50.
Example program
N1 G0 G40 G49 G80 G90 G17 (FORMAT 2 SAFE START)
N2 T1 M6 (1-2 END MILL)
N3 G0 G90 G54 X0. Y0. S3000 M3
N4 G51 R0-1.5 (FASTER XY RAMP)
…
N2 T1 M6 (1-2 END MILL)
N3 G0 G90 G54 X0. Y0. S3000 M3
N4 G51 R0-1.5 (FASTER XY RAMP)
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Not scaling. Fadal scaling is G51.3.
- A higher ramp speed can shake a light machine. Try small changes.
Related codes
G51 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Scaling |
| Haas NGC | Scaling |
| Mazak (EIA) | Scaling on |
| Okuma OSP | Scaling on |
| Mitsubishi M70 M80 | Scaling on |
| Brother Speedio | Scaling on |
| Heidenhain TNC (ISO) | Tool preselection |
| Mach3 Mach4 | Scaling and mirror |
| Centroid CNC12 Acorn | Scaling and mirroring on |
| Hurco WinMax (NC) | Scaling |
Every G-code for Fadal in your pocket. The app has the full example programs, search by number or shop word, a line decoder and calculators for tapping, threading and drilling.
Open G51 in the app All Fadal G-codes